/* The following code example is taken from the book
 * "The C++ Standard Library - A Tutorial and Reference, 2nd Edition"
 * by Nicolai M. Josuttis, Addison-Wesley, 2012
 *
 * (C) Copyright Nicolai M. Josuttis 2012.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <map>
#include <string>
#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    map<string, double> coll{{"tim",     9.9},
                             {"struppi", 11.77}
    };

    // square the value of each element:
    for_each(coll.begin(), coll.end(),
             [](pair<const string, double> &elem) {
                 elem.second *= elem.second;
             });

    // print each element:
    for_each(coll.begin(), coll.end(),
             [](const map<string, double>::value_type &elem) {
                 cout << elem.first << ": " << elem.second << endl;
             });
}
